Device for transmission to a distance of sounds produced by talking-machines.



No. 893,151. PATENTED JULY 14, 1908.

- B, DUGRETET. v

.DEVIGE FOR TRANSMISSION TO A DISTANCE OF SOUNDS PRODUCED BY TALKING MACHINES. APPLICATION FILED MAB. 4, 1967.

Z SHEETS-SHEET l.

No. 893,151. PATENTED JULY 14, 1908. E. DUGRETET. DEVICE FOR TRANSMISSION TO A DISTANCE OF SOUNDS PRODUCED BY TALKING MACHINES. APPLICATION I'ILBD MAB. 4, 1907.

' A 7 ll 2 SHEETS-SHEET 2.

EUGENE DUGRETET, or mars, FRANCE.

DEVICE FOR TRANSMISSION TO A Specification of Letters Patent.

DISTANCE OF SOUNDS PRODUCED BY TALKING- MACHINES.

Patented July 14, 1908.

Application filed March 4, 1907. Serial No. 360,429.

To all whom it may concern:

Be it known that I, EUGENE DUeRE'rET, a citizen of the French Republic, and'resident of Paris, France, have invented a certain new and useful Device for the-Transmission to a Distance of sounds Produced by Talking-Machines, of which the following is a specification. I

My invention relates to talking machines and especially toja device adapted to enable cylinder phonographs or disk graniophones, as well as their reproducing membrane, to be used for the purpose of transmitting to a dis tance the vibrations recorded on the cylinder or on the disk of the phonograph or the gramo hone.-

Wit these objects in view, my invention consists in the combination and arrangement of parts ashereafter described and especially pointed out in the appended'claims.

In the drawings':Figure .1 is a pers ec. tive view showing 'my invention as use in connection with a cylinder phonograph. Fig. 2 is a side elevation on an enlarged scale, showing the invention in connection with the horn, sound-box, and c linder of a phonograph. Fig. 3 is. an elevation showing the invention iii-connection with the horn, sound-box, and disk of 1 gramophone. Fig. 4 is a perspective view showing the invention in connection with a gramophone, and

showing the electric circuit.

' My invention is applicable for use with.

either acylinder phonogra h or a disk gramophone, and in Figs. .1 an 2, I show the invention asapplied to a cylinder phonograph.

In these figures, 1 indicates a microphone which is adapted to be attached to the horn or trumpet 3 of the phonogra h by any suit-. able means, as for mstance, by means of a rod 5 carrying an arm 6 to which the microhone is attached or connected, said arm 5 eing secured to a' bracket 7 riveted to thetrumpet 3. The'opposite end of the rod 5 carries a weight 9 which is adjustable on the rod and is adapted to be secured in adjusted position by a set-screw 10. l

2 indicates the'sound-box, and 1 9 the cylinder of the phonograph. The Imcrophone is to .be arranged in a suitable position as re-- gards inclination and distance with reference to the trum at opening, and to efiect this object, the r 5ca1=ries a sleeve l2-adjustable thereon and adapted to be heldin ad]ustable position by a. set-serew 13, and this sleeve as a pivotal connection at 4 with a supportin connection with a disk gramophone.

. for working my invention.

ing rod 14, which latter may have any suitable connection with thecarriage 20 of the phonograph, as for instance, through the medium of a rod 22 carried by the carriage and which carries a ball 21 through which adjustably passes, the rod 14. The electric through the terminals 15 and .16, one "of whichmay be connected with the metallic mass of the microphone as at 18. The weight 9, carried by the outer end of-the rod 5, insures a suitable pressure of the needle of the sound-box on the cylinder 19 in Figs. 1 and 2, or the gramophone disk 11 in Figs. 3 and 4. v The microphone may be of any suitable construction, a suitable kind being shown in the U. S. Patent 712056, dated October 28, 1902, and the mount that supports,- in the present instance, the microphone 1, is made entirely of metal and leaves freely exposed to the air the walls of the microphone.

In Figs. 3 and 4, I show my device as used current is conveyed to the microphone.

these figures,'11 indicates the disk, 2' the sound-box, and 3 the trumpet or horn. Inthese figures, my device is supported upon the trumpet or horn by means of a bracket 7 secured to the trumpet and which bracket carries -arod 5, upon which is adjustably mounted the microphone 1 said microphone being adapted to be secured in adjusted posi-' tion by setscrew 35 carried by the arm 6., which directly supports the microphone. 15 and 16 are the terminals for the' electric current. The electric current is'conveyed to the microphone 1 in Figs. 1 and 2. through thet erminals 15 and 16, and in Figs. 3 and 4 through the terminals 15 and 16.

Anysuitable arrangement may be provided for supplying .the electric current to the terminals, as for instance, by neans of a battery 32 seen in Fig. 4, the wires 26 and 27 from which, lead to the terminals on the micro hone. support. A suitable switch 29 wit contact studs 30 and a current breaker 31, complete the electric devices necessary be readily seen from the foregoing description I have provided a device allowing of one or more tele hone receivers employed in loud sounding te ephone stations being actuated at a distance.

What I-claimis:

1. The combination with a reproducer trumpet of a talking machine. of a supporting rod secured to the said trumpet su tantially parallel to the axis of the latter, a microphone, and means for connecting the microphone to the supporting rod and to hold it in front of the trumpet-opening, in adjustable relation thereto and means for supplying electric current tothe said microphone.

2. The combination with a reproducer trumpet of a talking machine, of a supporting rod secured to the said trumpet substantially parallel to the axis of the latter, a microphone, and means for connecting the microphone to the supporting rod and to hold it in front of the trumpet-opening, in adjustable relations thereto, means for supplying electric current to the said microphone and a weight adjustably mounted on the supporting rod.

3. The combination with a reproducer trumpet of a talking machine, of a supporting rod secured to the said trumpet substantially parallel to the axis of the latter, a microphone, means for connecting the latter to the supporting rod and to hold it in front of the to, a carriage of the talking machine, means connecting the said supporting rod with said A carriage, and means for supplying electric current to the said microphone.

4. The combination with a reproducer trumpet of a talking machine, of a supporting rod secured to the said trumpet substantially parallel to the axis of the latter, a microphone, means for connecting the latter to the su porting rod and to hold it in front of tie trumpet-opening in adjustable relation thereto, a carriage of the talking machine, a swivel connection between said supporting rod and said carriage, and means for supplying electric current to the microphone.

In testimony whereof I have hereunto set my hand in presence of two witnesses.

EUGENE DUCRETET. Witnesses:

HERNANDO DE SoTo, JACK H. BAKER. 

